All About Triangles
All interior angles in a triangle must always add up to this.
What is 180 degrees?
The formula A=bh is used to solve these problems.
What is area of rectangles and parallelograms?
In a parallelogram, the base measures 12cm and the height measures 7 cm. What is the area of the parallelogram?
A=bh
A=12x7
A=84 cm2
In a rectangular prism the length is 11 cm, the width is 4 cm and the height is 3 cm. What is the volume?
V= lwh
V=11 x 4 x 3
V= 44 x 3
V= 132 cm3
Turn 3 and 4/7 into an improper fraction.
25/7
Does three sides of a triangle measuring 7.2cm, 3.8cm, and 10.4cm form a triangle?
yes, b/c 11>10.4
The formula V=lwh is used to solve this.
What is volume of a rectangular prism?
In a Triangle the base measures 5cm and the height measures 8 cm. What is the area of the Triangle?
A=bh/2
A=(5)(8) /2
A= 40/2
A=20 cm2
IN a rectangular prism the area of the base 25 cm2 and the height of the prism is 4 cm. What is the volume of the prism?
V=Bh
V= 25 x 4
V=100 cm3
What is the LCM of 6 and 8?
24
Does three sides of a triangle measuring 5 cm, 2.5cm, and 2.5cm for a triangle?
No, bc 5=5
The B in the formula V=Bh stands for this.
What is area of the base?
In a parallelogram, The base of the shape is 10cm and the height of the shape is 3 and 1/2 cm. What is the area of the parallelogram?
A=bh
A=(10)(7/2)
A=70/2
A=35 cm2
In a rectangular prism, the length is 2/3 in, The width is 4/5 in and the height is 3 in. What is the volume of the prism?
V= lwh
V= (2/3)(4/5)(3/1)
V=24/15
V= 1 and 3/5
What is the GCF of 36 and 27?
9
In Triangle ABC, m<A is 50, m<B is 45, What is the measure of <C?
85 degrees
The formula A = bh/2 or 1/2 bh is used for this.
What is area of a Triangle?
In a Trapezoid, The top base is 3 cm and is parallel to a bottom base that is 7 cm. The height that joins the two bases is 9cm. What is the area of the trapezoid?
A= (b1+b2)(h) /2
A=(3 +7)(9) /2
A= 10(9) /2
A= 90/2
A=45 cm2
In a rectangular prism, the area of the base is 9ft2 and the height of the prism is 1 and 3/4 ft. What is the volume of the prism?
V= Bh
V= (9/1)(7/4)
V=63/4
V=15 and 3/4ft3
What is the Prime factorization of 45 using exponents?
3 x 3 x 5
32 x 5
In Triangle DEF, m<D is 22 degrees and side d is across from it, m<E is 97 degrees and side e is across from it, the m<F is ? and side f is across from it. Put the sides in order from shortest length to longest length.
d,f,e
The formula A= (b1+b2)(h)/2 is used to solve this.
What is area of a Trapezoid?
In a triangle, the base measures 2/3 cm and the height measures 4/5 cm. What is the area of the triangle?
A= bh/2
A=(2/3)(4/5)/2
A= (8/15) /2
A= (8/15) x (1/2)
A=8/30
A= 4/15 cm2
I a rectangular prism, The length is 2 and 3/4 in. The width is 1/2 in and the height is 4 in. What is the volume of the prism?
V=lwh
V= (11/4)(1/2)(4/1)
V= 44/8
V= 5 and 1/2 in3
Divide
3/4 divided by 1 and 1/4.
(3/4) / (5/4)
(3/4) x (4/5)
12/20
3/5